Glossary, ContinuedO (Continued)OUTPUTThe end product generated by an electronic device, such as acomputer, printer, or copier.OUTPUT DEVICEAn electronic accessory to a computer system thatprovides some type of end product either visually or as a hard copy.OUTLINEThe outside edge of a shape or form.OUTLINE DRAWINGA drawing where lines define the outer limits ofthe forms without the representation of modeling, light, or shadow.OVERHEAD PROJECTIONA projector that uses of a system of mirrorsand a fresnel lens to project a transparent image or object to another surfaceor screen.OVERLAPTo cover a part of one shape or line with another.OVERLAYA transparent or translucent sheet taped over the original artfor protection or to indicate instructions or corrections.OVERPRINTINGPrinting an image over another impression.OZALID MACHINEAn ammonia process printmaking machine thatproduces the same-size copy from transparent or translucent originals.PPAINTING KNIFESee PALETTE KNIFE. A type of palette knife madefor applying paint to a picture.PALETTE(l) The surface on which the artist places paint and mixescolors before applying them to canvas or other painting surface; (2) A groupof colors or gray values chosen for use in the same picture.PALETTE KNIFEA thin, flexible, steel blade set in a wooden or plastichandle available in a variety of shapes used for mixing paints and impasto,applying paint directly to a canvas or to create special textures directly on thesurface of a picture.Continued on next pageAI-42